TULSA, Okla. — Less than a week after an unarmed black man was shot dead by a white police officer on a Tulsa street, prosecutors charged the officer with first-degree manslaughter, a decision that may prevent unrest in a city with a long history of tense race relations. Tulsa officer Betty Shelby “reacted unreasonably” when she fatally shot 40-year-old Terence Crutcher on Sept. 16, prosecutors wrote in an affidavit filed with the charge on Thursday. Police also acted quickly to provide videos of the shooting to black community leaders and members of Crutcher’s family and then released them to the public.(nypost.com)…[+]